Last year, Monster Complex began to explore the songs and the music that that celebrates monsters—whether we’re talking about the scores for a monster movie, a stage show with songs or just the lyrics of a song that make you want to sing along. Here are 22 of our top “monster music” posts from the past year.

In this festive music video, CeeLo Green joins the Muppets for an evening of Christmas cheer. Watch the group breaking into song (listen for the compelling mashup). Hang on for bonuses.